Steins;Gate, Kokkoku Recommendations
A must-see for all time-traveling enthusiasts. Steins;Gate explores the multitude of possibilities in the course of time as it unforlds (from a point in the past onwards) while Kokkoku is about entering a co-called stasis, a frozen frame, a single moment in time where some have the "power" to interact while the rest of the world around them is like an unmovable picture. S;G starts off really slowly but at some point BAM! it hits you strong and accelerates. Kokkoku is going fast (oh the irony!) from sec one. There's lots of violence in both cases, if you have a weak stomach better avoid them
Both are science-fiction thrillers about time manipulation where the main characters (who both have an affinity for white lab coats, for some reason) are on the run from a shadowy organization. While Steins;Gate leans heavily on hard sci-fi to explain away its time-travel mechanics, Kokkoku takes a more fantastical and mystical approach.